Disagree. They did this on plebbit where if you take a screenshot it marks it as from plebbit and attaches a username. If I make a meme and someone else steals it and reposts it for fake internet points, it's then linked to them/the website, as if the website created that content. If a content creator wants to watermark his/her own stuff, they're free to. Sure, it might generate more traffic, but in the long run it disincentivizes original content creation.